do we know what sampling of the population uses twitter or uses other social media. maybe the people are really interested in it don't do it and there is a self selected population who are doing this, who are the unwilling sensors as we call them. >> aram, thanks for joining us. fascinating article. >>> up next, a look at the lessons from one of the most lessons from one of the most productive senates in history. . no way out. my usualt ransport was nowhere to be found. i knew, then and there, that i needed wheels asap. thats alpha, sierra, alpha...pickle. ahem! sis here's in the military, so i can join navy federal too. he's getting a great rate - so now he can drive himself to laser tag. it's a real sport. no, its not. 4 million members. 4 million stories. navy federal credit union. >>> gridlock in washington may seem like business as usual today but it hasn't always been that way. throughout the 1960's and '70s during one of the most turn you leapt periods in american history bipartisan senates drove sweeping reform to civil rights and social programs while challe